| SEQUEL | Continuation of a by-product |
| EATANSWILL | The location of a by-election in The Pickwick Papers |
| SIDEBURN | A continuation of a man's hairline in front of his ears named after a U.S. Civil War general (8) |
| ARSENIC | A toxic metalloid element; a by-product of the smelting of copper, lead, cobalt and gold ores (7) |
| TREACLE | A by-product of sugar refining; according to an old music-hall joke, it was mined in Lancashire, notably in Sabden, where the story was encouraged by fictitious reports in local newspapers in the 1930 |
| TAMARI | Rich dark Japanese soy sauce produced as a by- product of making miso, often used as a dip with sushi, tempura etc. (6) |
| SMOKE | A by-product of a bonfire or candle that is also the vapour used in apiculture to calm honey bees (5) |
| WHEY | A by-product of milk curdled in the process of making cheese (4) |
| COALTAR | A by-product of gas production, preparations of what have long been used to treat skin conditions, such as eczema, psoriasis and dandruff? (4,3) |
| GLYCEROL | Syrupy liquid, a by-product of soap manufacture (8) |
| SWEAT | Liquid waste, a by-product of hard labour (5) |
| GASOIL | ___ is a by product of ___ (2 |
| PERSISTENCE | Continuation of a course of action come what may (11) |
| LAPEL | Continuation of a coat collar: kind of badge or pin (5) |
| FERMATA | In music, a continuation of a note or rest beyond its normal length |
| RENEWAL | Continuation of a subscription |
| FOLLOWTHROUGH | Continuation of a stroke after the ball is hit |
| EYESTRAIN | Perhaps serenity a by-product of reading in the dark (9) |
| MARC | Revolting stuff which is a by-product of winemaking (4) |
| COBALT | Metal element found as a by-product of copper and nickel mining (6) |
